#include<iostream>
using namespace std;
int main() {
	int array[100] = {
		5,6,8,6,9,1,6,1,2,4,9,1,9,8,2,3,6,4,7,7,
		5,9,5,0,3,8,7,5,8,1,5,8,6,1,8,3,0,3,7,9,
		2,7,0,5,8,8,5,7,0,9,9,1,9,4,4,6,8,6,3,3,
		8,5,1,6,3,4,6,7,0,7,8,2,7,6,8,9,5,6,5,6,
		1,4,0,1,0,0,9,4,8,0,9,1,2,8,5,0,2,5,3,3
	};
	int ans = 0;
	int month_day[] = { 31,28,31,30,31,30,31,31,30,31,30,31 };
	for (int month = 1; month <= 12; month++) {
		for (int day = 1; day <= month_day[month-1]; day++) {
			int year_month_day[8] = { 2,0,2,3,month / 10,month % 10,day / 10,day % 10 };
			int k = 0;
			for (int i = 0; i < 100; i++) {
				if (array[i] == year_month_day[k]) {
					k++;
				}
				if (k == 8) {
					ans++;
					break;
				}
			}
		}
	}
	cout << ans << endl;
}